Half to ellis r



(N0 Model.) 2 Sheets-Sheet 1.

G. F. HALL.

ROGKING CHAIR.

No. 413,140. Patented Oct. 15, 1889.

(No Model.)

2 Sheets-Sheet 2. G. P. HALL.

ROCKING CHAIR.

No 413,140. Patented Oct. 15, 1889.

m-mmn hu, Washingiun. n. c.

UNITED STATES PATENT OFFICE.

GEORGE FRANKLIN HALL, OF NEWARK, NEW JERSEY, ASSIGNOR OF ONE- HALF TOELLIS R. OARHUFF, OF SAME PLACE.

ROCKING-CHAIR.

SPECIFICATION forming part of Letters Patent No. 413,140, dated October15, 1889.

Application filed May 25, 1889. Sem'al No. 312,144:- (No model.)

To all whom it may concern.-

Be it known that I, GEORGE FRANKLIN HALL, a citizen of the UnitedStates, residing in Newark, county of Essex, and State of New Jersey,have invented certain new and useful Improvements in Rocking-Chairs, ofwhich the following is a specification.

This invention is an improvement on that patented to me May 29, 1888,No. 383,808, and relates principally to a means for adapting the hangerarms or links 0 shown therein for application to chairs of differentwidths.

The invention consists in the construction shown and described hereinfor a rocking chair having a stationary base.

In the annexed drawings, Figure 1 is a side elevation of the entirechair; Fig. 2, a front view of the chair-seat, the base, and connectionsbetween the same. Fig. 3 is a side view of one of the connecting-linkswith the sleeve provided with means for locking the chair in position;Fig. 4-, a view at right angles to that shown in Fig. 3 of the lowerhalf of the link and the parts applied thereto. Fig. 5 is a side View ofthe entire locking device; and Fig. 6 is a view similar to Fig. 2 of oneside of a chair, showing an alternative form of rocking device.

In Figs. 1, 2, and 6, a is the chair-seat; b, a downward]y-projectingframe secured to the lower edges of the same and provided with bearingsI) and b 0, the stationary base, and d are frames projecting upwardlyfrom the base 0 adjacent to the frame 27 and provided with bearings cland d 6 are links having studs e and c at their ends projectingoutwardly perpendicular to the same, the stud 6 being provided withsleeves f f fitted thereto. The studs 6 are fitted to the bearings d ofthe frames (1, and the sleeves ff are provided with hollow studs f whichare fitted to the bearings b of the frames (2. One of the sleeves f isprovided, additional to the stud f with an car It projecting from itsinner end, and with an arm Z projecting from theend adjacent to the studf 0% is a curved rod concentric with the forward bearing d of the framed, and shown herein secured to the frame d and base 0 at its ends. Theear his provided with a hole h,

fitted loosely to the rod 1%, and is adapted,

when the stud c and consequently the link 6, is vibrated by the movementof the chair, to slide loosely upon such rod m.

p is a lever having two cars at its base, the ear 19 being pivoted nearone of the upper edges of the chair-seat, and the ear 19 being connectedto the arm Z by means of a link 0. Such device forms a toggle-connectionbetween the lever 19, which is operated by the occupant of the chair,and the arm Z. It is entirely immaterial to my invention, however, whatmeans is used to lock such arm Z in its operative position, so long assome connection is provided from the same to the chair-seat adapted tobe moved by the operator.

The links 6 on each side of the chair are connected together by means ofa rod '2, secured adj ustably in holes in the same by setscrews r. Thesleeves f may be provided with set-screws, as shown herein, to securethem upon the studs 6 of the links 6; but the sleeve f, operating thelocking device, is constructed to turn readily upon the stud 6 in orderto perform its function properly.

The chair is operated, as in ordinary rocking-chairs, by a slightforward-and-backward motion of the occupant, th e ear h sliding freelyupon the curved rod m. WVhen it is desired to stop the chair in any oneposition, the lever 13 is forced backward, as shown in dotted lines inFig. 5, thereby throwing the arm Z of the sleeve f upward. This causes asimilar movement of the car it, and, being eccentric to the rod m, bitesor binds upon the same, thereby holding the lower end of the link in afixed position upon the rod on and arresting the motion of the chair.

In the construction shown in Fig. 6 the stud 6 only upon the link 6 isbent at right angles to its body, and the rod 0" is passed entirelythrough the lower end of such link and provided with the sleeve f,similar to that shown in Fig. 2. It will be seen that in thisconstruction the outer end of the rod 1' operates the same as the stud cand for the purposes of my invention it may be considered as the stud ealthough integral with the rod 0".

WVith some forms of chairs it maybe found desirable to use the latterconstruction in stead of that described above, and shown in the otherfigures of the drawings. It is obvious that the two frames d might beformed integral, and I do not therefore limit myself to that particularconstruction, as the frames serve merely to support the bearings cZ and0Z and their exact form is wholly immaterial to my invention.

The advantage of my present construction is thatthe total length of thestud 6 upon the link 6, provided with the sleeve having hollow stud-fmay be varied to suit chairs of different widths, and it is thereforenecessary to use only one pattern in casting the links, even whereapplied to chairs of different Widths.

My invention is especially adapted for application to chairs designedfor other uses than as rocking-chairs; and the locking device, inconnection with the rocking feature, aifords a very desirableconstruct-ion for barbers chairs, or operating-chairs for surgeons ordentists. I do not limit myself, however, to the application of thedevice to any particular style of rocking or tilting chairs,'as it wouldbe found equally desirable for other styles of chairs than thosereferred to specih'cally herein.

It is evident that in certain classes of chairs the frames cZ may befastened directly to the floor instead of to a base 0, as shown herein,and I do not therefore limit myself to a chair provided with such base.

In applying my locking device to rocking or tilting chairs it isimmaterial whether sleeves f be applied to the other links besides theone having the locking device and that such device would operate asreadily with the lianger-ar1ns shown in my patent, No. 383,808, as thoseshown herein. It is also evident that in order to secure the adjustablefeature of the links provided with studs having sleeves f thereon suchadjustable devices could be used on one side of the chair only, ifdesired; butI prefer to apply the adj ustable links upon both sides ofthe chairin order to give the latter a symmetrical appearance. In somecases I find it desirable to pivot the end of the lever 13 directly tothe chair-seat, and theupper end of the link '0 to the lever above suchpivot. I do not, therefore, limit myself to the exact construction ofthe lever shown herein.

Having thus set forth my invention, whatI claim herein isl. Thecombination, with a base and supporting-frame cZ, provided with thebearings d and d of a chair-seat provided with the bearings b and bsuspended below the level of the bearings d and d the links 6,6011-vnecting the bearings and provided with the studs 6 and c and one or moresleeves f, applied to one or more of the studs (2 and provided withstuds J, as and for the purpose set forth.

2. The combination, with a base and'supporting-frame (1, provided withthe bearings d and (Z of a chair-seat provided with the bearings b and bsuspended below the level of the bearings cl and d the links a,connecting the bearings and provided with the studs 6 and 6 the rods 0",connecting the links in pairs, and one or more sleeves f, applied to thestuds e and provided with studs f as and for the purpose set forth.

3. The combination, with a base-frame c and supporting-frame cZ,provided with the bearings d and 0Z of a chair-seat provided with thebearings 19' and b suspended below the level of the bearings d and (Zthe links 6, connecting the bearings and provided with the studs 6 and 6a sleeve f, applied to one of the studs 2 and provided with perforatedear 7t and arm Z, as described, a stationary curved rod m, secured atits ends to the frame (Z and base 0, concentric with the bearing CF, andpassing through the aperture in the ear h, and means for turning the armZ, as and for the purpose set forth.

4. The combination, with a base-frame c and supportingframe (Z, providedwith the bearings cZ' and 0Z of a chair-scat provided with the bearingsb and b suspended below the level of the bearings d. and (Z the links 6,connecting the bearings and provided with the studs 6' and 6 a sleeve f,applied to one of the studs 6 and provided with perforated ear h and armZ, as described, a stationary curved rod on, secured at its ends to theframe cZ and base 0, concentric with the bearing d and passing throughthe aperture in the ear h, the lever 19, pivoted to the chair-seat, anda link connecting the lever 19 with the arm Z, the whole arranged andoperated as and for the purpose set forth.

5. The combination, with the base-frame c and supporting-frame (Z,provided with the bearings-CZ and (Z of a chairseat provided with thebearings 12 and b suspended below the level of the bearings d and (Z thelinks 6, connecting the bearings and provided with the studs 6 and 6 asleeve f, mounted upon the stud c and provided with perforated ear h andarm Z, as described, a stationary curved rod 0%, secured at its ends tothe frame d and base e, concentric with the path of the stud when thechair is in motion, and means for raising and depressing the arm Z, asand for the purpose set forth.

Intestimony that I claim the foregoing as my invention I have signed myname in presence of two subscribing witnesses.

GEORGE FRANKLIN HALL.

Witnesses ALFRED GARTNER, ADAM HERZINGER.

